dianfu commented on code in PR #19958:
URL: https://github.com/apache/flink/pull/19958#discussion_r897546979
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java:
##########
@@ -410,6 +410,20 @@ ANY, and(logical(LogicalTypeRoot.BOOLEAN), LITERAL)
.outputTypeStrategy(TypeStrategies.aggArg0(t -> t, true))
.build();
+ public static final BuiltInFunctionDefinition FIRST_VALUE =
Review Comment:
Add last_value/first_value methods in BaseExpressions and also in PyFlink?
##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/stream/table/AggregateITCase.scala:
##########
@@ -114,6 +114,34 @@ class AggregateITCase(mode: StateBackendMode) extends
StreamingWithStateTestBase
assertEquals(expected.sorted, sink.getRetractResults.sorted)
}
+ @Test
+ def testFirstLastValue(): Unit = {
Review Comment:
Could we integrate it into existing test case, e.g.
testGroupAggregateWithExpression, etc. Then we could avoid introducing another
it case.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
